# Any suggestions on a mathematical way to decide whether you want to get an X, 8, or 8+?

Discussion in 'iPhone' started by Starfyre, Sep 25, 2017.

1. ### Starfyre macrumors 68030

Joined:
Nov 7, 2010
#1
For all you math nerds, geeks, or statisticians out there. Anyone have ideas on some mathematical method you can use to decide which phone you want to buy based on features, priorities, etc.? So far I've been very subjective in my decision making, creating lists of features and comparing them and using the Apple website. Is there some complex (or simple) mathematical way I can make these into numbers and model them to get some scoring to determine which phone I should actually buy based on numbers instead of general thinking?

Joined:
Sep 2, 2013
3. ### tgi macrumors 65816

Joined:
Aug 29, 2012
#3
Truth.

Do you like the X? Do you not mind spending \$1,000 or more? Do you not care about touch ID?

If you answered yes to all of these, get the X. If you answered no to any of these, get the 8 or 8 plus.

Joined:
Apr 27, 2015
#4
Lots of decision metrics out there. But you have to be able to assign a comparative numeric value to how important each issue is to you, and also to each candidate model's degree of fulfillment of that issue. No one can do that but you. And no model can do it for you - models only help you aggregate your numbers toward a decision.

5. ### McScooby macrumors 6502a

Joined:
Oct 15, 2005
Location:
The Paps of Glenn Close, Scotland.
#5
Hand in pocket, check loose change, that's as mathematical as it gets!

6. ### OneMike macrumors 603

Joined:
Oct 19, 2005
#6
Overcomplicating it.

Make a list of prison and cons for each. Pick a winner

7. ### Juan007 macrumors 6502a

Joined:
Jun 14, 2010
#7
Yeah so iPhone 8 is \$700, iPhone X is \$1000. (\$700 / 8) < (\$1000 / 10), so that proves iPhone 8 is a better value than iPhone X. But since iPhone X is the phone of the future, that \$1000 is not in today's dollars, it's in 2023 dollars. At a 3% rate of inflation, that means iPhone X is a FAR better value than the 8! So buy the X, math doesn't lie.

8. ### eyoungren macrumors Core

Joined:
Aug 31, 2011
Location:
ten-zero-eleven-zero-zero by zero-two
#8
Eeny, meeny, miny, moe,
Catch a tiger by the toe.
If he hollers, let him go,
Eeny, meeny, miny, moe.

9. ### Strelok macrumors 6502a

Joined:
Jun 6, 2017
Location:
United States
#9
0 = I want iPhone X, 1 = I want iPhone 8/8+.

Randomly generate 0's and 1's, count the amount of 0's and 1's.

???

Profit.

10. ### AJsAWiz macrumors 68040

Joined:
Jun 28, 2007
Location:
Ohio
#10
Flip a 3 sided coin . . . uh, er, object.

eMail (or snail mail) Sheldon on Big Bang for an equation.

Joined:
Sep 10, 2009
12. ### kevjen888 macrumors 6502a

Joined:
Jul 13, 2008
#12
I saw you’ve posted multiple threads on debating whether to get 8 or X. Don’t overthinking this, it’s not a mutual exclusive proposition especially with all the upgrade plans available.

13. ### protoxx macrumors 6502a

Joined:
Oct 10, 2013
#13
Rock-Paper-Scissors-Lizard-Spock

Toss two coins. 2 tails 8, 1 heads, 1 tails 8+, 2 heads X

14. ### rootee macrumors regular

Joined:
Feb 12, 2013
Location:
California
#14

if(small_phone > large_phone)
{
return iphone8;
}
else if(touch_id > face_id)
{
return iphone8++;
}
else
{
return iphonex;
}

Joined:
Aug 5, 2001
Location:
Denmark
16. ### Relentless Power macrumors Penryn

Joined:
Jul 12, 2016
#16
Your post is not very clear and is very convoluted. But trying to gather what you're referring to, mathematically, it comes down to one thing, consumers should purchase what they can afford based on monthly income and debt ratio. It's that simple.

17. ### Zipster3 Suspended

Joined:
Sep 1, 2017
#17
Yep 8 64Gb cheapest

18. ### roeiz macrumors 65816

Joined:
Sep 13, 2010
#18
you just HAVE TO prioritize your most needed feature that is different in every model.

for me it was size - so since i got a + model, i can never go down. not even for the X.
so i logically KNOW i have only one option until an X+ arrives.
my dilemma is whether to upgrade from a 6S+ or not.
but i certainly don't NEED to upgrade

anyway, find your most important feature and ONLY focus by that.

Joined:
Apr 8, 2008
20. ### 4ppleg1rl macrumors regular

Joined:
Aug 29, 2017
21. Sep 26, 2017
Last edited: Sep 26, 2017

### Newtons Apple macrumors Core

Joined:
Mar 12, 2014
Location:
Jacksonville, Florida
#21
Why can’t people make their own choices anymore?

Joined:
Sep 29, 2015
Location:
Istanbul
23. ### Zune55 macrumors 6502a

Joined:
May 2, 2015
#23
You seems over excited, calm down. If you have Apple Watch open Breathe app and follow instructions.

24. ### Chronus macrumors regular

Joined:
Sep 9, 2014
#24
Categorise this...

Do I want it?

Or

Do I need it?

Does it do anything better than what I have already?

Could that money be better spent elsewhere?

25. ### ABC5S Suspended

Joined:
Sep 10, 2013
Location:
Florida
#25
Many of those are on this form.

What color should I get
Does this color match my other stuff
Is this color a girly phone
Etc, etc.